What it is
The potassium salt of sorbic acid, this is a mild preservative especially effective against yeast and mold. It is used at low levels, often with other preservatives, to keep water-containing products safe through their shelf life, and it works best in lower-pH formulas.
Safety & warnings
Considered one of the gentler preservatives and generally well tolerated; mild irritation is uncommon.
Origin & sourcing
Synthetic salt of sorbic acid (which also occurs naturally in some berries).
Questions everyone asks
What does potassium sorbate do?
It is a mild preservative that protects the product from yeast and mold.
Is it a gentle preservative?
Yes, it is considered one of the milder cosmetic preservatives.